i bought this in a lakeland buying frenzy as i had got sick of steaming or boiling tiny amounts of vegetables for ds - it has now occurred to me that i have no idea exactly how to cook, say, a couple of sprigs of broccoli- ie do you just shove it in on high for couple of mins, or do you add water, and if so how much? any tips on using it, or other things to do with it would be great.